Initial commit: PureFox firmware for LuckFox Pico Ultra #1
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🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
Calculate actual rootfs size instead of using fixed 6GB allocation. This reduces the final image size from 400MB to ~250MB by creating the filesystem with appropriate initial size before resize2fs. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
- Change DSD format from u32be to dsd_u32le (ALSA native) - Increase max sample rate to 22579200 Hz (DSD512) - Supports: DSD64/128/256/512 native playback 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
Sync DTS changes from master (v1.6.1): - Added mute_inv_gpio pinctrl definition for GPIO2_A5 - Updated all three device tree variants (ext, 512_ext, pll) with mute-inv-gpios property - Added mute_inv_gpio to pinctrl-0 references - GPIO2_A5 provides inverted mute signal (LOW when muted, HIGH when unmuted) 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
Changes synced from master v1.6: - Removed premute_delay_ms (no longer used in signal-based auto-mute) - Added sysctl -p before post_chk (consistent with master) - Preserved Ultra-specific: resize2fs, mount -a, mixer auto-detection 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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